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Synthesis and Structural Characterization of a Hydrated Gallosilicate Zeolite with the Nat-Framework

Published online by Cambridge University Press:  28 February 2011

D. Xie ,
J. M. Newsam ,
J. Yang  and
W. B. Yelon
D. Xie
Affiliation:
University of Missouri Research Reactor, Columbia, MO 65211, USA
J. M. Newsam
Affiliation:
Exxon Research and Engineering Company, Route 22 East, Annandale, NJ 08801, USA
J. Yang
Affiliation:
University of Missouri Research Reactor, Columbia, MO 65211, USA Permanent address: Institute of Atomic Energy, Beijing, People's Republic of China
W. B. Yelon
Affiliation:
University of Missouri Research Reactor, Columbia, MO 65211, USA
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Abstract

Gallosilicate NAT-framework zeolites have been synthesized from Na2O:TMA2O:Ga2O3:SiO2:H2O gels and characterized by chemical analysis and powder X-ray diffraction. The structure of a hydrated material (Orthorhombic, Fdd2, a = 18.423(4) Å, b = 18.826(3) Å, c = 6.652(1) Å) was determined using powder neutron diffraction. The framework Si:T ratio, Si-Ga segregation and non-framework cation and water configurations are similar to those in the analogous aluminosilicates. The geometrical effects of framework gallium substitution are consistent with those observed for other zeolite framework topologies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 111: Symposium O – Microstructure and Properties of Catalysts , 1987 , 147
Copyright
Copyright © Materials Research Society 1988

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